Preheat your oven to 400ºF

In a medium bowl, mix sesame oil, low sodium soy sauce, brown sugar, garlic, and Hawaiian barbeque sauce.

Stir in red pepper, orange pepper, sweet onion, and crushed pineapple.

In a 9x13 baking dish spread out a small amount of your pineapple mixture and place your pork tenderloin over it.

Make 12 slices along the pork tenderloin cutting ¾ the way through the meat leaving it attached at the bottom.

Cut your pineapple slices in half and place 1 half in each tenderloin slice.

Pour the remaining pineapple mixture along the pork tenderloin making sure to coat evenly.

Bake uncovered for 40 minutes or until the internal temperature of the tenderloin reached 145ºF.

Slice and serve and warm.